In order to provide reference for the industrial application of aqueous enzymatic method(AEE)for Idesia polycarpa var.vestita Diels oil extraction,the AEE conditions of extracting oil from fresh fruit of Idesia polycarpa var.vestita Diels were optimized by single-factor tests and response surface methodology,and the quality of the oil extracted by AEE was compared with that extracted by Soxhlet extraction,hot pressing and cold pressing.The results showed that the optimal extraction conditions of AEE were as follows:heating pretreatment(steaming for 10 min),solid-liquid ratio 1∶3.5,extraction time 5.6 h,enzyme dosage 2.70％(mass ratio of cellulase to neutral protease 1∶1).The oil extraction rate achieved 77.45％under the optimal conditions.Compared with the oil extracted by the other three methods,the acid value(2.62 mgKOH/g)and peroxide value(5.55 mmol/kg)of the oil extracted by AEE were the lowest,and the linoleic acid content was the highest(64.03％).In conclusion,the quality of Idesia polycarpa var.vestita Diels oil extracted by the optimized AEE process is better.
关键词
水酶法/毛叶山桐子/鲜果油/提取率/油脂品质
Key words
aqueous enzymatic method/Idesia polycarpa var.vestita Diels/fresh fruit oil/extraction rate/oil quality
维普
万方数据